Finding the Third Proportional to 146,172 and 218,672

Step by Step Solution

1. Step 1: Write the proportion equation
   146,172 : 218,672 = 218,672 : x
2. Step 2: Convert to fraction form
   146,172/218,672 = 218,672/x
3. Step 3: Cross multiply
   146,172x = 218,672 × 218,672
4. Step 4: Simplify right side
   146,172x = 47,817,443,584
5. Step 5: Solve for x
   x = 47,817,443,584/146,172
6. Step 6: Final answer
   x = 327,131.35